its less than you might think. it's 0* split in vac areas and max 4* split in boost. that's really it.

 

ether you guys are ridiculously smart or you all need a vacation.

I have not clue what you guys are talking about but it sounds cool.

 

Info like this makes me think of the good old days, back when the signal-to-noise ratio of the internet was nice and high... before myspace, facebook, and iTunes.

 

i really cant understand this.. but good work for doing what you do

 

Yeah over my head too, I generally submerge myself with the information until I understand it. But I would just drown, trying to understand all this. Explain it in simple terms lol JUST KIDDING

 

There is still plenty of that. Usually not on car forums though.

 

I have a programmer board/adapter coming for the Motorola G5 processor using the M68SPGMR11 programmer.

Was a bit rough finding this one.

 

I think the guys talking geek speak here are electrical hardware and/or software engineers by training or they have too much spare time on their hands... there is a lot of jargon in any discipline, and they are just speaking to that. Pretty neat stuff regardless. I love threads like this

 

^^ 4* split in boost? I thought Mazda spec was at at LEAST 14* split in boost. I'm no expert but that's what I understand

 

I haven't ever see any evidence proving numbers.

 

If you don't know the units used in the Mazda tables, how do you know it's 4 degrees split? serious question

 

yeah back in college we used the motorola hc11 chip lol brings back memorys haha

 

I don't think he was implying absolute values but rather relative. some areas of L/T maps look the same i.e. zero split; other areas have up to 4 x's magnitude difference.so maybe 4 x 3.5 degs == 14 deg total split

 

5k rpm, 0 mmHg = 36.9* (176) of ign... on the trailing map it -4.6 (170) of the primary map.

 

you're right - the entire trailing map (in vacuum) is of the same value... it fades from -4* degree to -14.8*

in fact, 5K Revs column is 0* trailing until atmospheric pressure which is then -4.9*, -9.5* then 14.8*
it continues like that all over the map.

 

Only way to prove numbers in the real world would be to use a Mazda tester/monitor tool. Also, the service highlights manual indicates that timing can vary up to 7 degrees based on knock sensor feedback alone.



for reference, here are the early model PFC timing maps (current PFC default maps are different). Supposedly these are close to stock.





here is the final injector pulsewidth map (hidden basemap * Commander INJ map correction) for that same model PFC. this does not include air temp etc corrections



10000 PIM units = atmospheric pressure
20000 PIM units = 1.0 kg/cm^2 boost or 14.22 psi

-- leading timing is in degrees BTDC
-- trailing timing is the number of degrees of separation between firing of the trailing and leading plugs
-- fuel map is in milliseconds of injector pulsewidth

 

subscribed buddy (not that i understand it all, but i do understand enough to know that its pimp ish lol)

 

updates?

 

What kind of updates were you looking for?

I've since moved on to other projects to keep me busy.

 

I think I know the answer, but have you found any of the other fuel/timing maps in the ECU or figured out what units the maps are actually representing?

 

the cosmo new model training book has the timing map in it, clearly split is small at low load, and big at high load.

the rx8 can be plugged into the dealership computer, it also runs more split @wot than it does at say half throttle.

i do not specifically know about the FD of course...

 

Of course there is more information... OMP, correction tables, etc..

There are a few people here who I've shared that information with but for something more specific you could always log the FD and build your own map for these or run the ECU on a workbench.

I didn't have any help extracting this information and dont feel the need to release it. Sorry.

 

^ ouch

 

I can respect that you're protective of work that you've put in but what was the point of posting the images of the maps in the first place, to gloat? Poor form.

 

^_^